Ethercat panel configuration

Hi everyone, I’d like to share a long-standing issue I encountered and the solution I found. The problem began when I tried to connect an EtherCAT panel to LinuxCNC. During the configuration process, the slave device remained stuck in the ‌PREOP‌ state and failed to enter ‌OP‌ (Operational state). This was caused by manually configuring certain PDO files, which led to unrecognized settings. The fix was to set configPdos="false" in the configuration. Apologies for my poor English—the original text was translated using software. For reference, I’ve also attached an image showing the LED activation (see attached image). Hope this helps anyone facing a similar issue!

Role of configPdos
‌Function‌:

‌configPdos="true"‌: Enables automatic PDO mapping from the slave’s ESI file.
‌configPdos="false"‌: Requires manual PDO configuration in XML.

Thanks for posting your solution. 

Could you share your EtherCAT configuration for this control panel? 

 

<masters>
<master idx="0" appTimePeriod="1000000" refClockSyncCycles="3">
<!-- panel -->
<slave idx="0" type="generic" vid="00000890" pid="101407" configPdos="false">
<syncManager idx="2" dir="out">
<pdo idx="1600">
<pdoEntry idx="7000" subIdx="01" bitLen="1" halPin="out-1" halType="bit"/>
</pdo>
<pdo idx="1602">
<pdoEntry idx="7020" subIdx="01" bitLen="1" halPin="out-2" halType="bit"/>
</pdo>
<pdo idx="1603">
<pdoEntry idx="7030" subIdx="01" bitLen="1" halPin="out-3" halType="bit"/>
</pdo>
</syncManager>
<syncManager idx="3" dir="in">
<pdo idx="1a00">
<pdoEntry idx="6000" subIdx="01" bitLen="1" halPin="in-1" halType="bit"/>
</pdo>
<pdo idx="1a01">
<pdoEntry idx="6010" subIdx="01" bitLen="1" halPin="in-2" halType="bit"/>
</pdo>
<pdo idx="1a02">
<pdoEntry idx="6020" subIdx="01" bitLen="1" halPin="in-3" halType="bit"/>
</pdo>
<pdo idx="1a03">
<pdoEntry idx="6030" subIdx="01" bitLen="1" halPin="in-4" halType="bit"/>
<pdoEntry idx="6030" subIdx="11" bitLen="16" halPin="value" halType="u32"/>
</pdo>
</syncManager>
</slave>
</master>
</masters>

Sure, but that's just one example. Because I haven't done all the configuration yet, in the XML below, I show some outputs and inputs, where value is used to read the MPG signal.

Interesting, that grouping of pdoentries into individual PDOs reminds me of the software I use. But it isn't uncommon I have understood.
Anyway, the ethercat server writes diagnostic messages you can view with the "dmesg" command. Maybe you found something there?